发明申请
US20120080402A1 PLANARIZATION METHOD FOR MEDIA 有权
媒体平面化方法

PLANARIZATION METHOD FOR MEDIA
摘要:
A planarization process may planarize a media disk that has data trenches between data features and larger servo trenches between servo features. A filler material layer is deposited on the media disk and provides step coverage of the trenches. The filler material has data recesses over the data trenches and servo recesses over the servo trenches that must be removed to produce a planar media surface. A first planarization process is used to remove the data recesses and a second planarization process is used to remove the servo recesses.
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